Zila Sahkari Bank Unnao mPassbook is a mobile application on mobile device which shows all the account related details of the customer available to him through his account passbook on mobile phone app in a Smartphone. The main feature of ZSBL UNNAO-mPassbook is that the customer is provided with the account passbook on his mobile handset. Whenever the application is opened it synchronizes and updates all the latest transactions of all accounts of the customer.